package com.bw.gmall.realtime.dws.app;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.bw.gmall.realtime.common.base.BaseApp;
import com.bw.gmall.realtime.common.bean.TradeSkuOrderBean;
import com.bw.gmall.realtime.common.constant.Constant;
import com.bw.gmall.realtime.common.function.DorisMapFunction;
import com.bw.gmall.realtime.common.util.DateFormatUtil;
import com.bw.gmall.realtime.common.util.FlinkSinkUtil;
import com.bw.gmall.realtime.common.util.HbaseUtil;
import org.apache.flink.api.common.eventtime.SerializableTimestampAssigner;
import org.apache.flink.api.common.eventtime.WatermarkStrategy;
import org.apache.flink.api.common.functions.FlatMapFunction;
import org.apache.flink.api.common.functions.ReduceFunction;
import org.apache.flink.api.common.functions.RichMapFunction;
import org.apache.flink.api.common.state.MapState;
import org.apache.flink.api.common.state.MapStateDescriptor;
import org.apache.flink.api.common.state.StateTtlConfig;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.api.java.functions.KeySelector;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.datastream.KeyedStream;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.KeyedProcessFunction;
import org.apache.flink.streaming.api.functions.windowing.ProcessWindowFunction;
import org.apache.flink.streaming.api.windowing.assigners.TumblingEventTimeWindows;
import org.apache.flink.streaming.api.windowing.windows.TimeWindow;
import org.apache.flink.util.Collector;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.kafka.connect.data.Decimal;

import java.math.BigDecimal;
import java.time.Duration;

public class DwsTradeSkuOrderWindow extends BaseApp {
    public static void main(String[] args) {
        new DwsTradeSkuOrderWindow().start(10029, 4, Constant.TOPIC_DWD_TRADE_ORDER_DETAIL, Constant.DWS_TRADE_SKU_ORDER_WINDOW);
    }

    @Override
    public void handle(StreamExecutionEnvironment env, DataStreamSource<String> kafkaSource) {
        // 1. 读取数据源
        // 2. 数据清洗
        SingleOutputStreamOperator<JSONObject> etlStream = kafkaSource.flatMap(new FlatMapFunction<String, JSONObject>() {
            @Override
            public void flatMap(String s, Collector<JSONObject> collector) throws Exception {
                try {
                    // 因为有撤回流,所有要过滤
                    if (s != null) {
                        JSONObject jsonObject = JSON.parseObject(s);
                        String skuId = jsonObject.getString("sku_id");
                        Long ts = jsonObject.getLong("ts");
                        if (skuId != null && ts != null) {
                            jsonObject.put("ts", ts * 1000);
                            collector.collect(jsonObject);
                        }
                    }

                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
        // 3. 添加水位线
        SingleOutputStreamOperator<JSONObject> watermarksStream = etlStream.assignTimestampsAndWatermarks(WatermarkStrategy.<JSONObject>forBoundedOutOfOrderness(Duration.ofSeconds(3)).withTimestampAssigner(new SerializableTimestampAssigner<JSONObject>() {
            @Override
            public long extractTimestamp(JSONObject jsonObject, long l) {
                return jsonObject.getLong("ts");
            }
        }));
        // 4.分组
        KeyedStream<JSONObject, String> keyedStream = watermarksStream.keyBy(new KeySelector<JSONObject, String>() {
            @Override
            public String getKey(JSONObject jsonObject) throws Exception {
                // 不能以sku_id分组，会引起重复计算
                return jsonObject.getString("id");
            }
        });
        // 5.校正数据
        SingleOutputStreamOperator<TradeSkuOrderBean> processStream = keyedStream.process(new KeyedProcessFunction<String, JSONObject, TradeSkuOrderBean>() {

            private MapState<String, BigDecimal> mapState;

            @Override
            public void open(Configuration parameters) throws Exception {
                MapStateDescriptor<String, BigDecimal> stateDescriptor = new MapStateDescriptor<String, BigDecimal>("order_state", String.class, BigDecimal.class);
//                stateDescriptor.enableTimeToLive(StateTtlConfig.newBuilder(Time.seconds(30L)).build());
                mapState = getRuntimeContext().getMapState(stateDescriptor);
            }

            @Override
            public void processElement(JSONObject jsonObject, KeyedProcessFunction<String, JSONObject, TradeSkuOrderBean>.Context context, Collector<TradeSkuOrderBean> collector) throws Exception {
                BigDecimal splitTotalAmount = jsonObject.getBigDecimal("split_total_amount");
                BigDecimal splitActivityAmount = jsonObject.getBigDecimal("split_activity_amount");
                BigDecimal splitCouponAmount = jsonObject.getBigDecimal("split_coupon_amount");
                BigDecimal sku_num = jsonObject.getBigDecimal("sku_num");
                BigDecimal orderPrice = jsonObject.getBigDecimal("order_price");

                // 计算原始金额
                BigDecimal originalAmount = orderPrice.multiply(sku_num);

                // 取状态
                BigDecimal split_total_amount = mapState.get("splitTotalAmount");
                BigDecimal split_activity_amount = mapState.get("splitActivityAmount");
                BigDecimal split_coupon_amount = mapState.get("splitCouponAmount");
                BigDecimal original_amount = mapState.get("originalAmount");
                split_total_amount = split_total_amount == null ? new BigDecimal(0) : split_total_amount;
                split_activity_amount = split_activity_amount == null ? new BigDecimal(0) : split_activity_amount;
                split_coupon_amount = split_coupon_amount == null ? new BigDecimal(0) : split_coupon_amount;
                original_amount = original_amount == null ? new BigDecimal(0) : original_amount;

                String skuId = jsonObject.getString("sku_id");
                String skuName = jsonObject.getString("sku_name");
                String id = jsonObject.getString("id");
                Long ts = jsonObject.getLong("ts");
                    collector.collect(TradeSkuOrderBean.builder()
                            .skuId(skuId)
                            .orderDetailId(id)
                            .orderAmount(splitTotalAmount.subtract(split_total_amount))
                            .originalAmount(originalAmount.subtract(original_amount))
                            .activityReduceAmount(splitActivityAmount.subtract(split_activity_amount))
                            .couponReduceAmount(splitCouponAmount.subtract(split_coupon_amount))
                            .skuName(skuName)
                            .ts(ts)
                            .build());
                    // 更新状态
                    mapState.put("splitTotalAmount", splitTotalAmount);
                    mapState.put("splitActivityAmount", splitActivityAmount);
                    mapState.put("splitCouponAmount", splitCouponAmount);
                    mapState.put("originalAmount", originalAmount);

            }
        });
        // 6.分组 开窗 聚合
        SingleOutputStreamOperator<TradeSkuOrderBean> reduceStream = processStream.keyBy(new KeySelector<TradeSkuOrderBean, String>() {
                    @Override
                    public String getKey(TradeSkuOrderBean tradeSkuOrderBean) throws Exception {
                        return tradeSkuOrderBean.getSkuId();
                    }
                })
                .window(TumblingEventTimeWindows.of(org.apache.flink.streaming.api.windowing.time.Time.seconds(10L)))
                .reduce(new ReduceFunction<TradeSkuOrderBean>() {
                    @Override
                    public TradeSkuOrderBean reduce(TradeSkuOrderBean value1, TradeSkuOrderBean value2) throws Exception {
                        value1.setOriginalAmount(value1.getOriginalAmount().add(value2.getOriginalAmount()));
                        value1.setCouponReduceAmount(value1.getCouponReduceAmount().add(value2.getCouponReduceAmount()));
                        value1.setActivityReduceAmount(value1.getActivityReduceAmount().add(value2.getActivityReduceAmount()));
                        value1.setOrderAmount(value1.getOrderAmount().add(value2.getOrderAmount()));
                        return value1;
                    }
                }, new ProcessWindowFunction<TradeSkuOrderBean, TradeSkuOrderBean, String, TimeWindow>() {
                    @Override
                    public void process(String s, ProcessWindowFunction<TradeSkuOrderBean, TradeSkuOrderBean, String, TimeWindow>.Context context, Iterable<TradeSkuOrderBean> iterable, Collector<TradeSkuOrderBean> collector) throws Exception {
                        TimeWindow window = context.window();
                        long start = window.getStart();
                        long end = window.getEnd();
                        for (TradeSkuOrderBean tradeSkuOrderBean : iterable) {
                            tradeSkuOrderBean.setStt(DateFormatUtil.tsToDateTime(start));
                            tradeSkuOrderBean.setEdt(DateFormatUtil.tsToDateTime(end));
                            tradeSkuOrderBean.setCurDate(DateFormatUtil.tsToDate(System.currentTimeMillis()));
                            collector.collect(tradeSkuOrderBean);
                        }
                    }
                });

        SingleOutputStreamOperator<TradeSkuOrderBean> dimStream = reduceStream.map(new RichMapFunction<TradeSkuOrderBean, TradeSkuOrderBean>() {

            private Connection hbaseConnect;

            @Override
            public void open(Configuration parameters) throws Exception {
                hbaseConnect = HbaseUtil.getHbaseConnect();
            }

            @Override
            public void close() throws Exception {
                HbaseUtil.closeHBaseConn(hbaseConnect);
            }

            @Override
            public TradeSkuOrderBean map(TradeSkuOrderBean tradeSkuOrderBean) throws Exception {
                // 关联维度顺序顺序，必须要关联sku_id
                String skuId = tradeSkuOrderBean.getSkuId();
                // 关联SKU
                JSONObject dimSkuInfo = HbaseUtil.getCells(hbaseConnect, Constant.HBASE_NAMESPACE, "dim_sku_info", skuId);
                tradeSkuOrderBean.setSpuId(dimSkuInfo.getString("spu_id"));
                tradeSkuOrderBean.setTrademarkId(dimSkuInfo.getString("tm_id"));
                tradeSkuOrderBean.setCategory3Id(dimSkuInfo.getString("category3_id"));
                // 关联spu
                JSONObject dimSpuInfo = HbaseUtil.getCells(hbaseConnect, Constant.HBASE_NAMESPACE, "dim_spu_info", tradeSkuOrderBean.getSpuId());
                tradeSkuOrderBean.setSpuName(dimSpuInfo.getString("spu_name"));

                // 关联tm
                JSONObject dimBaseTrademark = HbaseUtil.getCells(hbaseConnect, Constant.HBASE_NAMESPACE, "dim_base_trademark", tradeSkuOrderBean.getTrademarkId());
                tradeSkuOrderBean.setTrademarkName(dimBaseTrademark.getString("tm_name"));

                // 关联c3
                JSONObject dimBaseCategory3 = HbaseUtil.getCells(hbaseConnect, Constant.HBASE_NAMESPACE, "dim_base_category3", tradeSkuOrderBean.getCategory3Id());
                tradeSkuOrderBean.setCategory3Name(dimBaseCategory3.getString("name"));
                tradeSkuOrderBean.setCategory2Id(dimBaseCategory3.getString("category2_id"));

                // 关联c2
                JSONObject dimBaseCategory2 = HbaseUtil.getCells(hbaseConnect, Constant.HBASE_NAMESPACE, "dim_base_category2", tradeSkuOrderBean.getCategory2Id());
                tradeSkuOrderBean.setCategory2Name(dimBaseCategory2.getString("name"));
                tradeSkuOrderBean.setCategory1Id(dimBaseCategory2.getString("category1_id"));
                // 关联c1
                JSONObject dimBaseCategory1 = HbaseUtil.getCells(hbaseConnect, Constant.HBASE_NAMESPACE, "dim_base_category1", tradeSkuOrderBean.getCategory1Id());
                tradeSkuOrderBean.setCategory1Name(dimBaseCategory1.getString("name"));
                return tradeSkuOrderBean;
            }
        });

        // 写到doris
        dimStream.map(new DorisMapFunction<>()).sinkTo(FlinkSinkUtil.getDorisSink(Constant.DWS_TRADE_SKU_ORDER_WINDOW));

    }
}
